public class test2_6 {
   public static void main(String args[]) {
      int [] a ={10,20,30,40},b[]={{1,2},{4,5,6,7}};
      b [0] = a;
      b [0] [1] = b [1] [3];
      System.out.println(b[0][3]);
      System.out.println(a[1]);
   }
}
